Buggy code:
public void dconst_1 ( ) { } public void ddiv ( ) { } public void decrStackSize ( int offset ) { } public void dload ( int iArg ) { } public void dload_0 ( ) { } public void dload_1 ( ) { } public void dload_2 ( ) { } public void dload_3 ( ) { } public void dmul ( ) { } public void dneg ( ) { } public void drem ( ) { } public void dreturn ( ) { } public void dstore ( int iArg ) { } public void dstore_0 ( ) { } public void dstore_1 ( ) { } public void dstore_2 ( ) { } public void dstore_3 ( ) { } public void dsub ( ) { } public void dup ( ) { } public void dup_x1 ( ) { } public void dup_x2 ( ) { } public void dup2 ( ) { } public void dup2_x1 ( ) { } public void dup2_x2 ( ) { } public void exitUserScope ( BlockScope currentScope ) { } public void exitUserScope ( BlockScope currentScope , LocalVariableBinding binding ) { } public void f2d ( ) { } public void f2i ( ) { } public void f2l ( ) { } public void fadd ( ) { } public void faload ( ) { } public void fastore ( ) { } public void fcmpg ( ) { } public void fcmpl ( ) { } public void fconst_0 ( ) { } public void fconst_1 ( ) { } public void fconst_2 ( ) { } public void fdiv ( ) { } public void fload ( int iArg ) { } public void fload_0 ( ) { } public void fload_1 ( ) { } public void fload_2 ( ) { } public void fload_3 ( ) { } public void fmul ( ) { } public void fneg ( ) { } public void frem ( ) { } public void freturn ( ) { } public void fstore ( int iArg ) { } public void fstore_0 ( ) { } public void fstore_1 ( ) { } public void fstore_2 ( ) { } public void fstore_3 ( ) { } public void fsub ( ) { } public void generateBoxingConversion ( int unboxedTypeID ) { } public void generateClassLiteralAccessForType ( TypeBinding accessedType , FieldBinding syntheticFieldBinding ) { } public final void generateCodeAttributeForProblemMethod ( String problemMessage ) { } public void generateConstant ( Constant constant , int implicitConversionCode ) { } public void generateEmulatedReadAccessForField ( FieldBinding fieldBinding ) { } public void generateEmulatedWriteAccessForField ( FieldBinding fieldBinding ) { } public void generateEmulationForConstructor ( Scope scope , MethodBinding methodBinding ) { } public void generateEmulationForField ( FieldBinding fieldBinding ) { } public void generateEmulationForMethod ( Scope scope , MethodBinding methodBinding ) { } private void generateFieldAccess ( byte opcode , int returnTypeSize , char [ ] declaringClass , char [ ] name , char [ ] signature ) { } private void generateFieldAccess ( byte opcode , int returnTypeSize , ReferenceBinding binding , char [ ] name , TypeBinding type ) { } public void generateImplicitConversion ( int implicitConversionCode ) { } public void generateInlinedValue ( boolean inlinedValue ) { } public void generateInlinedValue ( byte inlinedValue ) { } public void generateInlinedValue ( char inlinedValue ) { } public void generateInlinedValue ( double inlinedValue ) { } public void generateInlinedValue ( float inlinedValue ) { } public void generateInlinedValue ( int inlinedValue ) { } public void generateInlinedValue ( long inlinedValue ) { } public void generateInlinedValue ( short inlinedValue ) { } public void generateOuterAccess ( Object [ ] mappingSequence , ASTNode invocationSite , Binding target , Scope scope ) { if ( mappingSequence == null ) { if ( target instanceof LocalVariableBinding ) { <START_BUG> scope . problemReporter ( ) . needImplementation ( ) ; <END_BUG> } else { scope . problemReporter ( ) . noSuchEnclosingInstance ( ( ( ReferenceBinding ) ( target ) ) , invocationSite , false ) ; } return ; } if ( mappingSequence == ( BlockScope . NoEnclosingInstanceInConstructorCall ) ) { scope . problemReporter ( ) . noSuchEnclosingInstance ( ( ( ReferenceBinding ) ( target ) ) , invocationSite , true ) ; return ; } else if ( mappingSequence == ( BlockScope . NoEnclosingInstanceInStaticContext ) ) { scope . problemReporter ( ) . noSuchEnclosingInstance ( ( ( ReferenceBinding ) ( target ) ) , invocationSite , false ) ; return ; } if ( mappingSequence == ( BlockScope . EmulationPathToImplicitThis ) ) { this . aload_0 ( ) ; return ; } else if ( ( mappingSequence [ 0 ] ) instanceof FieldBinding ) { FieldBinding fieldBinding = ( ( FieldBinding ) ( mappingSequence [ 0 ] ) ) ; this . aload_0 ( ) ; this . getfield ( fieldBinding ) ; } else { load ( ( ( LocalVariableBinding ) ( mappingSequence [ 0 ] ) ) ) ; } for ( int i = 1 , length = mappingSequence . length ; i < length ; i ++ ) { if ( ( mappingSequence [ i ] ) instanceof FieldBinding ) { FieldBinding fieldBinding = ( ( FieldBinding ) ( mappingSequence [ i ] ) ) ; this . getfield ( fieldBinding ) ; } else { this . invokestatic ( ( ( MethodBinding ) ( mappingSequence [ i ] ) ) ) ; } } } public void generateReturnBytecode ( Expression expression ) { } public void generateStringConcatenationAppend ( BlockScope blockScope , Expression oper1 , Expression oper2 ) { } public void generateSyntheticBodyForConstructorAccess ( SyntheticMethodBinding accessBinding ) { } public void generateSyntheticBodyForEnumValueOf ( SyntheticMethodBinding methodBinding ) { } public void generateSyntheticBodyForEnumValues ( SyntheticMethodBinding methodBinding ) { } public void generateSyntheticBodyForFieldReadAccess ( SyntheticMethodBinding accessBinding ) { } public void generateSyntheticBodyForFieldWriteAccess ( SyntheticMethodBinding accessBinding ) { } public void generateSyntheticBodyForMethodAccess ( SyntheticMethodBinding accessMethod ) { }

Fix:
scope . problemReporter ( ) . needImplementation ( invocationSite ) ;